| Component | Open WebUI |
| Severity | high (CVSS 7.7) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N |
| Published (NVD) | 2026-08-04 |
| Last modified | 2026-09-18 |
| Affected versions | open_webui >= 0.9.6, < 0.11.0 |
| Fixed in | 0.11.0 |
| Weakness | CWE-918 |
| CISA KEV | not listed |
NVD description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, with WEB_LOADER_ENGINE=playwright, the Playwright web loader validates only the top-level page request and lets sub-resource requests pass unvalidated. A page supplied by an authenticated user can use JavaScript to reach blocked internal addresses, and returned DOM can include data read from those addresses in web-search or RAG output. This issue is fixed in 0.11.0.
What to do
- Upgrade Open WebUI to
0.11.0or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-70479
- https://github.com/open-webui/open-webui/pull/27526
- https://github.com/open-webui/open-webui/security/advisories/GHSA-w2rx-84hp-gg95
- https://github.com/open-webui/open-webui/commit/bef63a2ae915571d50d2722a635e8bfa753d7877
- https://github.com/open-webui/open-webui/releases/tag/v0.11.0
Read more
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